Aptorian;223837 said:

There IS a difference though. All the others were supposedly named by Master Sergeant Uber Drill Master Braven Tooth.
Fiddler was named by Whiskeyjack, in Raraku, and he was the one that named Braven Tooth.
No quotes at hand, so if anyone could oblige, I thank you.

As for the subject at hand, I think the main difference between Fiddler and Gesler is in their character, in how they react to a stupid superior. Fiddler works around stupid orders, and gets away with it (this is a trait good sergeants and corporals have), while Gesler's reaction is a punch in the face. Stormy is probably like Gesler in that, having been Adjutant and all.
If I were a soldier in the 14th, I'd trust the level headed commander over the impulsive/explosive one.